Add support for creating/deleting folders to the console app

src/console/main.vala

@@ -93,6 +93,8 @@ class ImapConsole : Gtk.Window {
         "list",
         "xlist",
         "examine",
+        "create",
+        "delete",
         "fetch",
         "uid-fetch",
         "fetch-fields",
@@ -184,6 +186,14 @@ class ImapConsole : Gtk.Window {
                         examine(cmd, args);
                     break;
 
+                    case "create":
+                        create(cmd, args);
+                    break;
+
+                    case "delete":
+                        @delete(cmd, args);
+                    break;
+
                     case "fetch":
                     case "uid-fetch":
                         fetch(cmd, args);
@@ -421,6 +431,28 @@ class ImapConsole : Gtk.Window {
         this.cx.send_command(new Geary.Imap.ExamineCommand(new Geary.Imap.MailboxSpecifier(args[0])));
     }
 
+    private void create(string cmd, string[] args) throws Error {
+        check_connected(cmd, args, 1, "<mailbox>");
+
+        status("Creating %s".printf(args[0]));
+        this.cx.send_command(
+            new Geary.Imap.CreateCommand(
+                new Geary.Imap.MailboxSpecifier(args[0])
+            )
+        );
+    }
+
+    private void @delete(string cmd, string[] args) throws Error {
+        check_connected(cmd, args, 1, "<mailbox>");
+
+        status("Deleting %s".printf(args[0]));
+        this.cx.send_command(
+            new Geary.Imap.DeleteCommand(
+                new Geary.Imap.MailboxSpecifier(args[0])
+            )
+        );
+    }
+
     private void fetch(string cmd, string[] args) throws Error {
         check_min_connected(cmd, args, 2, "<message-span> <data-item...>");
 

src/engine/imap/command/imap-delete-command.vala

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2018 Michael Gratton <mike@vee.net>
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later). See the COPYING file in this distribution.
+ */
+
+/**
+ * The RFC 3501 DELETE command.
+ *
+ * Deletes the given mailbox. Per the RFC, this must not be used to
+ * delete mailboxes with child (inferior) mailboxes and that also are
+ * marked \Noselect.
+ *
+ * See [[http://tools.ietf.org/html/rfc3501#section-6.3.4]]
+ */
+public class Geary.Imap.DeleteCommand : Command {
+
+    public const string NAME = "DELETE";
+
+    public DeleteCommand(MailboxSpecifier mailbox) {
+        base(NAME);
+        this.args.add(mailbox.to_parameter());
+    }
+
+}

src/engine/meson.build

@@ -99,6 +99,7 @@ geary_engine_vala_sources = files(
   'imap/command/imap-compress-command.vala',
   'imap/command/imap-copy-command.vala',
   'imap/command/imap-create-command.vala',
+  'imap/command/imap-delete-command.vala',
   'imap/command/imap-examine-command.vala',
   'imap/command/imap-expunge-command.vala',
   'imap/command/imap-fetch-command.vala',